for those you want to know a few details. The laser beam is visible only at night (barely). On the other hand, the dot is visible during daylight just fine (up to 30 meters when not under shadow).
There are other version of blue lasers are stronger. from 5mW to 300mW. if the beam hit a phosphoric objects (object that glow in the dark after exposed to light) it LIGHTS them up instantly, and i was amazed to see that happening. (i tried my green laser on these objects and nothing happened). The object will glow, like you never see it glowing before!!! Very lightweight